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Finding the Fourth Proportional to 91,053.70, 136,580.55 and 49,063.30

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Solution

The fourth proportional to 91,053.70, 136,580.55 and 49,063.30 is: 73,594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,053.70 : 136,580.55 = 49,063.30 : x
  2. Step 2: Convert to fraction form
    91,053.70/136,580.55 = 49,063.30/x
  3. Step 3: Cross multiply
    91,053.70x = 136,580.55 × 49,063.30
  4. Step 4: Simplify right side
    91,053.70x = 6,701,092,498.82
  5. Step 5: Solve for x
    x = 6,701,092,498.82/91,053.70
  6. Step 6: Final answer
    x = 73,594.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.